Electro-optical panel including stretch film

Abstract

An electro-optical panel includes: an electro-optical element emitting a light or adjusting a transmittance of a light; and a stretch film including a polymeric material, wherein a main stretching axis direction of the stretch film is disposed within a range of ±30° with respect to a side of the electro-optical panel.

What is claimed is: 
     
       1. An electro-optical panel comprising:
 an electro-optical element emitting a light or adjusting a transmittance of a light; and 
 a stretch film including a polymeric material, 
 wherein a main stretching axis direction of the stretch film is disposed within 30° with respect to a side of the electro-optical panel. 
 
     
     
       2. An electro-optical panel comprising:
 an electro-optical element emitting a light or adjusting a transmittance of a light; and 
 a plurality of stretch films including a polymeric material, 
 wherein a main stretching axis direction of one of the plurality of stretch films which is closer to a light emitting surface of the electro-optical panel than others of the plurality of stretch films is disposed within 30° with respect to a side of the electro-optical panel. 
 
     
     
       3. The electro-optical panel of  claim 2 , wherein the plurality of stretch films comprises:
 a retardation film closer to the light emitting surface than the electro-optical element, the retardation film including a polymeric material; and 
 a polarizing film closer to the light emitting surface than the retardation film, the polarizing film including a polymeric material, 
 wherein a main stretching axis direction of the polarizing film is disposed within 30° with respect to a side of the electro-optical panel. 
 
     
     
       4. An electro-optical panel comprising:
 an electro-optical element emitting a light or adjusting a transmittance of a light; and 
 a first stretch film on a first surface of the electro-optical element, 
 wherein a main stretching axis direction of the first stretch film is disposed within 30° with respect to a bending side of the electro-optical element, the electro-optical panel is configured to be bent or rolled to cause bending in the bending side of the electro-optical element. 
 
     
     
       5. The electro-optical panel of  claim 4 , wherein the electro-optical element is bent such that the first surface of the electro-optical element is disposed at an inner portion, and wherein a plurality of second stretch films are disposed between the first stretch film and the electro-optical element. 
     
     
       6. The electro-optical panel of  claim 5 , wherein each of the first stretch film and the plurality of second stretch films is one of a polarizing film and a retardation film. 
     
     
       7. The electro-optical panel of  claim 4 , wherein the electro-optical element is bent such that the first surface of the electro-optical element is disposed at an outer portion, and wherein a plurality of second stretch films are disposed on an outer surface of the first stretch film. 
     
     
       8. The electro-optical panel of  claim 7 , wherein each of the first stretch film and the plurality of second stretch films is one of a polarizing film and a retardation film. 
     
     
       9. The electro-optical panel of  claim 4 , wherein the first stretch film is a biaxial stretch film having two stretching axis directions perpendicular to each other, and wherein the main stretching axis direction is one of the two stretching axis directions of the biaxial stretch film where the biaxial stretch film is stretched for a largest distance when subject to a pulling force. 
     
     
       10. The electro-optical panel of  claim 4 , wherein the electro-optical element emits a light through one of the first surface and a second surface opposite to the first surface. 
     
     
       11. The electro-optical panel of  claim 4 , wherein the electro-optical element comprises:
 a flexible substrate; 
 a thin film transistor layer on the flexible substrate; and 
 an organic light emitting diode layer on the thin film transistor layer. 
 
     
     
       12. The electro-optical panel of  claim 11 , wherein the electro-optical element comprises:
 a barrier layer between the flexible substrate and the thin film transistor layer; 
 an encapsulator on the organic light emitting diode layer; and 
 a metallic sealing layer on the encapsulator. 
 
     
     
       13. The electro-optical panel of  claim 11 , wherein the electro-optical element further comprises a color filter layer between the thin film transistor layer and the organic light emitting diode layer. 
     
     
       14. A flexible electro-optical panel comprising:
 an electro-optical element comprising a thin film transistor layer and a light emitting layer, the thin film transistor layer configured to control emission or transmission of light from the light emitting layer, the electro-optical element shaped to have:
 two first edges extending in a first direction, and 
 two second edges between the two first edges and extending in a second direction that forms an angle relative to the first direction, the electro-optical element bent more easily to cause bending of the two first edges than to cause bending of the two second edges; and 
 
 a stretch film coupled to the electro-optical element, the stretch film having a main stretch direction that is within 30° from the first direction. 
 
     
     
       15. The flexible electro-optical panel of  claim 14 , further comprising:
 one or more additional stretch films, wherein the one or more additional stretch films is disposed between the stretch film and the electro-optical element. 
 
     
     
       16. The flexible electro-optical panel of  claim 15 , wherein the stretch film is a polarizing film and at least one of the one or more additional stretch films is a retardation film, the polarizing film being closer than the retardation film to a light-emitting surface of the flexible electro-optical panel. 
     
     
       17. The flexible electro-optical panel of  claim 14 , further comprising:
 one or more additional stretch films, wherein the stretch film is disposed between the one or more additional stretch films and the electro-optical element. 
 
     
     
       18. The flexible electro-optical panel of  claim 17 , wherein at least one of the one or more additional stretch films is a polarizing film, the stretch film is a retardation film, and the polarizing film is closer than the retardation film to a light-emitting surface of the flexible electro-optical panel. 
     
     
       19. A flexible electro-optical panel comprising:
 an electro-optical element comprising a thin film transistor layer and a light emitting layer, the thin film transistor layer configured to control emission or transmission of light from the light emitting layer, the electro-optical element shaped to have:
 two first edges extending in a first direction, and 
 two second edges between the two first edges and extending in a second direction that forms an angle relative to the first direction, the electro-optical element bent more easily to cause bending of the two first edges than to cause bending of the two second edges; and 
 
 a retardation film coupled to the electro-optical element; 
 a polarizing film coupled to the retardation film, the polarizing film closer to a light-emitting surface of the flexible electro-optical panel than the retardation film and the electro-optical element; 
 wherein at least one of the polarizing film and the retardation film is a stretch film, the stretch film having a main stretch direction that is within 30° from the first direction. 
 
     
     
       20. The flexible electro-optical panel of  claim 19 , further comprising:
 a film coupled to the electro-optical element, the film further away from the light-emitting surface of the flexible electro-optical panel than the retardation film and the polarizing film, wherein the film is a stretch film having a main stretch direction that is within 30° from the first direction or the second direction.